Assistance with problem 10.6:

10.6) Many law enforcement agencies use voice-stress analysis to help determine whether persons under interogation are lying. If the sound of frequency of a persons voice changes when asked a question, the presumption is that the person is being untruthful. For this situation, state the null and alternative hypothesis in verbal terms, then identify what would constitute a Type I error and a Type II error in this situation.

Question 10.6: Check to see if I have this correct:

10.6: Many law enforcement agencies use voice-stress analysis to help determine whether persons under interrogation are lying. If the sound frequency of a personís voice changes when asked a question, the presumption is that the person is being untruthful. For this situation, state the null and alternative hypothesis in verbal terms, then identify what would constitute a Type I error and a Type II error in this situation.Answer:Ho: The sound of a personís voice changes when asked a question is not evidence that they are being untruthfulH1: The sound of a personís voice changes when asked a question is evidence they are being untruthfulType I occurs when you reject a null hypothesis that was true.Type II occurs when you accept a null hypothesis that was false.

The null hypothesis is the basic statement that is true or false for the case.